Cognizant Production Support Analyst Interview Questions and Answers

Q1. Right now didn't any interview.kindly arrange a interview.
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Q2. No I didn't not received any interview process.
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Q1. What is internal working of hashmap
Ans. 
HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.

• If multiple key-value pairs hash to the same index, they are stored in a linked list at that index.

• To retrieve a value...read more
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Q2. What is difference between hashmap and concurrent hashmap
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HashMap is not thread-safe while ConcurrentHashMap is thread-safe.
• HashMap is not thread-safe and can lead to ConcurrentModificationException if modified while iterating.

• ConcurrentHashMap allows concurrent modifications without the need for external synchronization.

• ConcurrentHashMap achieves thread-safety by dividing the map into segments, allowing multiple threads to operate on different segments concurrently.

• Concurren...read more
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Q3. Can we override main method in java
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No, main method in Java cannot be overridden.
• Main method is a static method of a class and cannot be overridden.

• Subclasses can have their own main method, but it will not be considered as the entry point of the program.

• Example: public class SubClass extends MainClass { public static void main(String[] args) { // This is not the entry point of the program }}
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Q4. Write the command to find the hidden files in unix
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Use the 'ls' command with the '-a' flag to find hidden files in Unix.
• Use the command 'ls -a' to list all files, including hidden files.

• Hidden files in Unix start with a dot (.) before the file name.

• Example: 'ls -a' will display all files, including hidden files.
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Q5. Write a command to replace a string in unix
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Use the sed command to replace a string in Unix
• Use the following syntax: sed 's/original_string/new_string/g' filename

• The 's' flag stands for substitute, 'g' flag stands for global (replace all occurrences)

• Example: sed 's/hello/goodbye/g' file.txt
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24/7 production environment

Q1. What is the difference between PL SQL AND SQL?
Ans. 
PL/SQL is a procedural language extension to SQL used for writing complex queries and programs.
• SQL is used for querying and manipulating data in a database

• PL/SQL is used for writing complex queries and programs

• PL/SQL is a procedural language that extends SQL with programming constructs like loops and conditional statements

• PL/SQL is used to create stored procedures, functions, and triggers in Oracle databases
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Q2. About programming
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Q3. Write a query using below data to find out last string from emp table?
Ans. 
Query to find last string from emp table
• Use the ORDER BY clause with DESC keyword to sort the table in descending order

• Use the LIMIT keyword to limit the result to 1 row

• Assuming the last string refers to the last row in the table
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Q4. Write s query to find maximum salary from EMP?
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Query to find maximum salary from EMP
• Use the MAX() function to find the maximum salary

• Specify the column name for salary in the SELECT statement

• Specify the table name and column name for salary in the FROM clause
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Q1. What is a project that you have worked on before?
Ans. 
Developed a web-based inventory management system for a retail company
• Utilized Java for backend development

• Implemented responsive design using HTML, CSS, and JavaScript

• Integrated barcode scanning functionality for efficient inventory tracking
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Q2. What was your role within the team?
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I was responsible for providing technical support to end users and troubleshooting application issues within the team.
• Providing technical support to end users

• Troubleshooting application issues

• Collaborating with team members to resolve issues

• Documenting solutions and best practices
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Q3. What SQL-based queries were asked during your interview? like self join , average
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Q1. Self introduction
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Q2. Work experience
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Q3. Which department are u working
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Q4. Timings and salary
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Q1. Name and experience and quality and checking etc
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Q2. How can handle ur problem and team work
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Q3. Times and salary
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Easy logical questions

Q1. Easy general questions asked
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Q2. General questions
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Q3. Strength and weaknesses, about project
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Q1. What is a role of support engineer
Ans. 
A support engineer is responsible for providing technical assistance and resolving issues related to software or hardware systems.
• Providing technical support to customers or end-users

• Troubleshooting and resolving software or hardware issues

• Installing, configuring, and maintaining systems

• Monitoring system performance and identifying potential problems

• Collaborating with development teams to address bugs or enhancements

• Do...read more
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Q2. What is ticketing tool
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A ticketing tool is a software application used to track and manage customer support requests or issues.
• Ticketing tools help in organizing and prioritizing customer support tickets.

• They provide a centralized platform for communication and collaboration between support teams and customers.

• Ticketing tools often include features like ticket assignment, status tracking, and reporting.

• Examples of popular ticketing tools inc
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Q3. What is monitoring tool
Ans. 
A monitoring tool is a software application or system that collects and analyzes data to track the performance and health of a system or application.
• Monitoring tools collect data from various sources such as servers, networks, databases, and applications.

• They provide real-time visibility into the system's performance, availability, and resource utilization.

• Monitoring tools can generate alerts or notifications when pred...read more
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Q4. What are SQL comments
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SQL comments are used to add explanatory notes or remarks within SQL code.
• SQL comments start with a double hyphen (--), or can be enclosed between /* and */

• Comments are ignored by the SQL engine and are not executed as part of the code

• Comments can be used to improve code readability and provide documentation

• Comments can be used to disable or temporarily remove parts of the code for testing or debugging purposes
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Q5. What doing in the SQL
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Q6. What is DML full form
Ans. 
DML stands for Data Manipulation Language.
• DML is a subset of SQL (Structured Query Language) used to manipulate data in a database.

• It includes commands like INSERT, UPDATE, DELETE, and SELECT.

• DML statements are used to add, modify, or delete data in database tables.

• For example, INSERT statement is used to add new records, UPDATE statement is used to modify existing records, DELETE statement is used to remove records, a...read more
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A good coding test will measure candidate capacity for problem solving skills and understanding of coding

Aptitude test plays important role of understanding the knowledge of the person

Q1. Tell about yourself , what are your strengths?
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Q2. What do you know about our company?
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Q3. What are your weakness?
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